智能认证界面，左上角返回键偶现点击无效

在智能认证界面，左上角偶现点击返回键缺无效，debug发现onClick事件没执行。

测试方法：打开智能认证页面，再点左上角返回按钮，再打开智能认证页面，再返回。反复操作，5,6次即可复现。

package com.umeng.uiconfig;

import android.content.Context;
import android.graphics.Color;
import android.graphics.Typeface;
import android.util.TypedValue;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.umeng.R;
import com.umeng.umverify.UMVerifyHelper;
import com.umeng.umverify.listener.UMCustomInterface;
import com.umeng.umverify.view.UMAuthRegisterViewConfig;
import com.umeng.umverify.view.UMAuthUIConfig;
import com.umeng.utils.UmengUtils;

public class CustomUIConfig {

    public Context mContext;
    public UMVerifyHelper mAuthHelper;

    public CustomUIConfig(Context context, UMVerifyHelper authHelper) {
        this.mContext = context;
        this.mAuthHelper = authHelper;
        buildUIConfig();
    }

    public void buildUIConfig() {
        mAuthHelper.removeAuthRegisterXmlConfig();
        mAuthHelper.removeAuthRegisterViewConfig();

        mAuthHelper.addAuthRegistViewConfig("back_btn", new UMAuthRegisterViewConfig.Builder()
                .setView(initBackBtn())
                .setRootViewId(UMAuthRegisterViewConfig.RootViewId.ROOT_VIEW_ID_BODY)
                .setCustomInterface(new UMCustomInterface() {
                    @Override
                    public void onClick(Context context) {
                        //此处未执行（偶现）
                        mAuthHelper.quitLoginPage();
                    }
                }).build());

        mAuthHelper.addAuthRegistViewConfig("title", new UMAuthRegisterViewConfig.Builder()
                .setView(initTitle())
                .setRootViewId(UMAuthRegisterViewConfig.RootViewId.ROOT_VIEW_ID_BODY)
                .build());

        mAuthHelper.addAuthRegistViewConfig("title_des", new UMAuthRegisterViewConfig.Builder()
                .setView(initTitleDes())
                .setRootViewId(UMAuthRegisterViewConfig.RootViewId.ROOT_VIEW_ID_BODY)
                .build());

        mAuthHelper.setAuthUIConfig(new UMAuthUIConfig.Builder()
                .setLogBtnText(mContext.getResources().getString(R.string.one_login))
                .setLogBtnBackgroundDrawable(mContext.getResources().getDrawable(R.drawable.login_bg))
                .setLogBtnTextColor(Color.WHITE)
                .setSwitchAccText(mContext.getResources().getString(R.string.bind_phonenumber_other))
                .setLogoHidden(true)
                .setNavHidden(false)
                .setNavReturnHidden(false)
                .setNavColor(Color.WHITE)
                .setNavTextColor(Color.WHITE)
                .setAppPrivacyColor(Color.GRAY, Color.parseColor("#EE5555"))
                .setCheckedImgDrawable(mContext.getResources().getDrawable(R.drawable.umeng_checkbox_checked))
                .setUncheckedImgDrawable(mContext.getResources().getDrawable(R.drawable.umeng_checkbox_normal))
                .setNumberColor(Color.WHITE)
                .setNumberSize(24)
                .setNumberColor(0xff000000).create());
    }

    private ImageView initBackBtn() {
        ImageView pImageView = new ImageView(mContext);
        pImageView.setImageResource(R.drawable.arrow_back);
        pImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
        RelativeLayout.LayoutParams pParams = new RelativeLayout.LayoutParams(UmengUtils.dp2px(mContext, 24), UmengUtils.dp2px(mContext, 24));
        pParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
        pParams.setMargins(UmengUtils.dp2px(mContext, 20.0F), 0, 0, 0);
        pImageView.setLayoutParams(pParams);
        return pImageView;
    }

    private TextView initTitle() {
        TextView textView = new TextView(mContext);
        textView.setText(R.string.bind_phonenumber);
        textView.setTextColor(Color.BLACK);
        textView.setTypeface(textView.getTypeface(), Typeface.BOLD);
        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 32);
        RelativeLayout.LayoutParams pParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, UmengUtils.dp2px(mContext, 40));
        pParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
        pParams.setMargins(UmengUtils.dp2px(mContext, 30.0F), UmengUtils.dp2px(mContext, 50), 0, 0);
        textView.setLayoutParams(pParams);
        return textView;
    }

    private TextView initTitleDes() {
        TextView textView = new TextView(mContext);
        textView.setText(R.string.bind_phonenumber_des);
        textView.setTextColor(Color.parseColor("#999999"));
        textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 14);
        RelativeLayout.LayoutParams pParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, UmengUtils.dp2px(mContext, 18));
        pParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, RelativeLayout.TRUE);
        pParams.setMargins(UmengUtils.dp2px(mContext, 30.0F), UmengUtils.dp2px(mContext, 100), 0, 0);
        textView.setLayoutParams(pParams);
        return textView;
    }

}

调用方式：

/**
 * 智能认证SDK调用
 */
public void startVerify(final Activity activity, final OnUMVerifyTokenGetListener onUMVerifyTokenGetListener) {
    this.mOnUMVerifyTokenGetListener = onUMVerifyTokenGetListener;
    this.mActivity = activity;
    mCustomUIConfig = new CustomUIConfig(activity.getApplicationContext(), mUMVerifyHelper);
    mUMVerifyHelper.setAuthListener(mUMTokenResultListener);
    mUMVerifyHelper.getLoginToken(activity.getApplicationContext(), 5000);
}